Improvement in gearing and ungearing pinions and wheels



iuird 5in-tre. @sind demise.

Jona SKINNER, or HADLEY, MIoHIcA'N.

Letters Patent No. 112,187, dated February 28, 1871.

IMPROVEMENT IN GEARING ANDUNGEARING PINIONS AND WHEELS.

The Schedule referred to in these Letters Patent and making part of thesame.

To whom it may conce/rn Beit known that I, JOHN SKINNR, of Hadley, inthe county of Lapeer and State of Michigan, have invented a new anduseful Improvement in Devices for Throwing Pinionsand Wheels intoand outof Gear; and I do declare that the following is a -trne and accuratedescription thereof', reference being had to the accompanying drawingand to the letters of reference marked thereon and being a part of thisspecification, in which-.- i

Figure l is a perspective of a line of shafting provided with mydevices.v

Figure 2 is a detached v,view of a bevel-wheel provided with band.

,Figure 3 is a detached view of the lever, with its attachments formoving tbeband.

Figure 4 is a plan vof a spur-wheel with the band attached, showing thesprings.

Figure 5 is a perspective view of my coupling.

Figure 6 is a perspective of the movable sill and attachments forthrowing' the spur-wheel into gear with the pinion.

Like letters indicate like parts in each figure.

The nature. of 'this invention relates to devices for thepurpose ofstarting machinery by means of friction, before throwing thedriving-pinion and spurwheel into gear, thereby obviating the greatdanger of breaking the cogs, which is frequently done when the strain instarting is entirely thrown upon them.

The invention consistsi First, in providing the pinion with a plainface,

and in providing the spur-wheel with a flanged band,

by means of which the machinery is first started by friction.

i) Scondly, in a peculiar device for operating said Thirdly, in a novelcoupling, by means of which the various portions of a line of shaftingare coupled together so as to be susceptible of a lateral motion.

Fourthly, in a new method of throwing the spurwheel into gear with thepinion.

In the accompanying drawing- A represents a line of shafting, providedwith suitable bearings or boxes a, in which said shafting' may freelyrotate, being driven by any suitable power.

Upon this shafting is secured, in any convenient manner, the spur-wheelB.

C is a band, fitting the periphery of the spur-wheel B, to which it issecured by the bolts b and the slots c, in such a manner that said bandmay have a lateral movement.

D is a.pinion, suitably secured to the spindle (l,

and, outside the cogs, it is provided with a plain sur-V face E, asshown, and which'is designed to engage with the right-angle iiange eofthe band C.

F is a lever, provided with suitable arms, j, to which are secured thefriction-Wheels G. rlhe lower end of this lever is pivoted at anyconvenient point below the shaft, and the friction-wheels G are soarranged that, with the forward movement of the lever, they will at thesame time engage with the rear ofthe band C and force it forward, in atrue vertical position, until its face or iiange strikes the plain faceof the pinion, when, the line of shafting being in mo, tion, motion iscommunicated to the spindle by the friction of the ange` and plain faceof the pinion being in contact.

H is a lever, pivoted at its outer end at g, 'and itis provided with abox or bearing, I,`in which the shafting rotates.

The opposite end of thislever is secured to another lever, J, the lowerendof which is pivoted at any convenient point.

The bearing I upon the lever H is so arranged that, with the forwardthrow of the lever J, causing acorresponding motion to the end of thelever H, to which it is pivoted, said bearing will strike against thehuh of the spnr-wheel and throwitinto gear with the pinion. The reversemotion of the levers H J will cause the bearing Lto stlikeagainstthe-coupling K and throw the spur-wheel out of gear with the pinion. Inorder to do this successfully, the varioussections which form the lineof shafting should have a slight lateral movement equal to the length ofthe cogs upon the spur-wheel.

To provide for this lateral movement I provide a coupling-clutch, K,which is constructed asfollows:

Upon one end of a'section of shafting, and rigidly secured thereto, Iprovide parallel projections, i, which fit into corresponding recesses,j, iu thehub k, which is secured to the end of the adjoining section ofshafting, said hub being surrounded by a band, m, which covers thejoint, or the hub and band may be in one piece, if desired.

` L are springs, so arranged and secured to the spurwheel and band that,after the Vsaid wheel has been thrown into gear with the pinion, ashereinbefore de` scribed, the springs will withdraw the liangeot' theband from contact with the plain dace of the pinion.

This device will be found beneficial in almost all kinds of machinery.In the drawing it is shown as applied to the spindles of aflonring-mill, M representing the stones of the mill. The line oishan-ing may be in constant motion. To'start a run of stones requiresmuch power, and if the pinion is thrown into gear when the shaft isrunning at ahigh speed the cogs of the pinion and spur-wheel are veryliable to break. To obviate this is the object of my invention.

When it is desired to set the stones in motion by means of theappropriate level', the band is given a forward movement(the bolts andslots, by means of spindle and the stone. When the starting has beenaccomplished, :t proper movement of the other -lever throws the twocogged wheels into gear Without any danger to their cogs.v

What I desire to -secure by Letters Patent is-' l.l The combintion ofthe mechanical devices herein described, vby means .of which motion isgiven to machinery by friction, with the devices for throwing the pinionand spur-wheel into gear, substantially as and for the purposes hereinset forth.

i l 2. The pinionD, provided with a plain face, E, outside the cogs, asdescribed, and for theV purposes set rfortli. v

3. 4The band C, provided with right-angle ange e,

`in connection with the spnr-wheel'B, when constructed,secured, andoperating` as and for the purposes wheelsG, in connection withfthe bandC, :is and for the purposes set forth.

5. The levers H J and bear-ing I, when constructed, combined, andoperating as and for the purposes set forth. 4

Witnesses: A JOHN SKINNER.

Taos. S. SPRAGUE, A M. STEWART.

